<?php
class smtp {
/* Public Variables */
var $smtp_port; //smtp_port 端口号
var $time_out;
var $host_name; //服务器主机名
var $log_file;
var $relay_host; //服务器主机地址
var $debug;
var $auth; //验证
var $user; //服务器用户名
var $pass; //服务器密码
/* Private Variables */
var $sock;
/* Constractor 构造方法*/
function __construct($relay_host = "", $smtp_port = 465, $user, $pass, $auth = false)
{
   $this->debug      = FALSE;
   $this->smtp_port  = $smtp_port;
   $this->relay_host = $relay_host;
   $this->time_out   = 30; //is used in fsockopen()
   #
   $this->auth       = $auth; //auth
   $this->user       = $user;
   $this->pass       = $pass;
   #
   $this->host_name  = "localhost"; //is used in HELO command
   // $this->host_name = "ssl://stmp.qq.com"; //is used in HELO command
   $this->log_file   = "";
   
   $this->sock = FALSE;
}
/* Main Function */
function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
{
   $header    = "";
   $mail_from = $this->get_address($this->strip_comment($from));
   $body      = mb_ereg_replace("(^|(\r\n))(\\.)", "\\1.\\3", $body);
   $header .= "MIME-Version:1.0\r\n";
   if ($mailtype == "HTML") { //邮件发送类型
       //$header .= "Content-Type:text/html\r\n";
       $header .= 'Content-type: text/html; charset=utf-8' . "\r\n";
   }
   $header .= "To: " . $to . "\r\n";
   if ($cc != "") {
       $header .= "Cc: " . $cc . "\r\n";
   }
   $header .= "From: " . $from . "\r\n";
   // $header .= "From: $from<".$from.">\r\n";	//这里只显示邮箱地址，不够人性化
   $header .= "Subject: " . $subject . "\r\n";
   $header .= $additional_headers;
   $header .= "Date: " . date("r") . "\r\n";
   $header .= "X-Mailer:By (PHP/" . phpversion() . ")\r\n";
   list($msec, $sec) = explode(" ", microtime());
   $header .= "Message-ID: <" . date("YmdHis", $sec) . "." . ($msec * 1000000) . "." . $mail_from . ">\r\n";
   $TO = explode(",", $this->strip_comment($to));
   
   if ($cc != "") {
       $TO = array_merge($TO, explode(",", $this->strip_comment($cc))); //合并一个或多个数组
   }
   
   if ($bcc != "") {
       $TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
   }
   
   $sent = TRUE;
   foreach ($TO as $rcpt_to) {
       $rcpt_to = $this->get_address($rcpt_to);
       if (!$this->smtp_sockopen($rcpt_to)) {
           $this->log_write("Error: Cannot send email to " . $rcpt_to . "\n");
           $sent = FALSE;
           continue;
       }
       if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
           $this->log_write("E-mail has been sent to <" . $rcpt_to . ">\n");
       } else {
           $this->log_write("Error: Cannot send email to <" . $rcpt_to . ">\n");
           $sent = FALSE;
       }
       fclose($this->sock);
       $this->log_write("Disconnected from remote host\n");
   }
   echo "<br>";
   //echo $header;
   return $sent;
}
/* Private Functions */
function smtp_send($helo, $from, $to, $header, $body = "")
{
   if (!$this->smtp_putcmd("HELO", $helo)) {
       return $this->smtp_error("sending HELO command");
   }
   #auth
   if ($this->auth) {
       if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {
           return $this->smtp_error("sending HELO command");
       }
       
       if (!$this->smtp_putcmd("", base64_encode($this->pass))) {
           return $this->smtp_error("sending HELO command");
       }
   }
   #
   if (!$this->smtp_putcmd("MAIL", "FROM:<" . $from . ">")) {
       return $this->smtp_error("sending MAIL FROM command");
   }
   
   if (!$this->smtp_putcmd("RCPT", "TO:<" . $to . ">")) {
       return $this->smtp_error("sending RCPT TO command");
   }
   
   if (!$this->smtp_putcmd("DATA")) {
       return $this->smtp_error("sending DATA command");
   }
   
   if (!$this->smtp_message($header, $body)) {
       return $this->smtp_error("sending message");
   }
   
   if (!$this->smtp_eom()) {
       return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
   }
   
   if (!$this->smtp_putcmd("QUIT")) {
       return $this->smtp_error("sending QUIT command");
   }
   
   return TRUE;
}
function smtp_sockopen($address)
{
   if ($this->relay_host == "") {
       return $this->smtp_sockopen_mx($address);
   } else {
       return $this->smtp_sockopen_relay();
   }
}
function smtp_sockopen_relay()
{
   $this->log_write("Trying to " . $this->relay_host . ":" . $this->smtp_port . "\n");
   $this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
   if (!($this->sock && $this->smtp_ok())) {
       $this->log_write("Error: Cannot connenct to relay host " . $this->relay_host . "\n");
       $this->log_write("Error: " . $errstr . " (" . $errno . ")\n");
       return FALSE;
   }
   $this->log_write("Connected to relay host " . $this->relay_host . "\n");
   return TRUE;
   ;
}
function smtp_sockopen_mx($address)
{
   $domain = ereg_replace("^.+@([^@]+)$", "\\1", $address);
   if (!@getmxrr($domain, $MXHOSTS)) {
       $this->log_write("Error: Cannot resolve MX \"" . $domain . "\"\n");
       return FALSE;
   }
   foreach ($MXHOSTS as $host) {
       $this->log_write("Trying to " . $host . ":" . $this->smtp_port . "\n");
       $this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
       if (!($this->sock && $this->smtp_ok())) {
           $this->log_write("Warning: Cannot connect to mx host " . $host . "\n");
           $this->log_write("Error: " . $errstr . " (" . $errno . ")\n");
           continue;
       }
       $this->log_write("Connected to mx host " . $host . "\n");
       return TRUE;
   }
   $this->log_write("Error: Cannot connect to any mx hosts (" . implode(", ", $MXHOSTS) . ")\n");
   return FALSE;
}
function smtp_message($header, $body)
{
   fputs($this->sock, $header . "\r\n" . $body);
   $this->smtp_debug("> " . str_replace("\r\n", "\n" . "> ", $header . "\n> " . $body . "\n> "));
   
   return TRUE;
}
function smtp_eom()
{
   fputs($this->sock, "\r\n.\r\n");
   $this->smtp_debug(". [EOM]\n");
   
   return $this->smtp_ok();
}
function smtp_ok()
{
   $response = str_replace("\r\n", "", fgets($this->sock, 512));
   $this->smtp_debug($response . "\n");
   
   if (!mb_ereg("^[23]", $response)) {
       fputs($this->sock, "QUIT\r\n");
       fgets($this->sock, 512);
       $this->log_write("Error: Remote host returned \"" . $response . "\"\n");
       return FALSE;
   }
   return TRUE;
}
function smtp_putcmd($cmd, $arg = "")
{
   if ($arg != "") {
       if ($cmd == "")
           $cmd = $arg;
       else
           $cmd = $cmd . " " . $arg;
   }
   
   fputs($this->sock, $cmd . "\r\n");
   $this->smtp_debug("> " . $cmd . "\n");
   
   return $this->smtp_ok();
}
function smtp_error($string)
{
   $this->log_write("Error: Error occurred while " . $string . ".\n");
   return FALSE;
}
function log_write($message)
{
   $this->smtp_debug($message);
   
   if ($this->log_file == "") {
       return TRUE;
   }
   
   $message = date("M d H:i:s ") . get_current_user() . "[" . getmypid() . "]: " . $message;
   if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) {
       $this->smtp_debug("Warning: Cannot open log file \"" . $this->log_file . "\"\n");
       return FALSE;
   }
   flock($fp, LOCK_EX);
   fputs($fp, $message);
   fclose($fp);
   
   return TRUE;
}
function strip_comment($address)
{
   $comment = "\\([^()]*\\)";
   while (mb_ereg($comment, $address)) {
       $address = mb_ereg_replace($comment, "", $address);
   }
   
   return $address;
}
function get_address($address)
{
   $address = mb_ereg_replace("([ \t\r\n])+", "", $address);
   $address = mb_ereg_replace("^.*<(.+)>.*$", "\\1", $address);
   
   return $address;
}
function smtp_debug($message)
{
   if ($this->debug) {
       echo $message . "<br>";
   }
}
function get_attach_type($image_tag) //
{
   
   $filedata = array();
   
   $img_file_con = fopen($image_tag, "r");
   unset($image_data);
   while ($tem_buffer = AddSlashes(fread($img_file_con, filesize($image_tag))))
       $image_data .= $tem_buffer;
   fclose($img_file_con);
   
   $filedata['context']  = $image_data;
   $filedata['filename'] = basename($image_tag);
   $extension            = substr($image_tag, strrpos($image_tag, "."), strlen($image_tag) - strrpos($image_tag, "."));
   switch ($extension) {
       case ".gif":
           $filedata['type'] = "image/gif";
           break;
       case ".gz":
           $filedata['type'] = "application/x-gzip";
           break;
       case ".htm":
           $filedata['type'] = "text/html";
           break;
       case ".html":
           $filedata['type'] = "text/html";
           break;
       case ".jpg":
           $filedata['type'] = "image/jpeg";
           break;
       case ".tar":
           $filedata['type'] = "application/x-tar";
           break;
       case ".txt":
           $filedata['type'] = "text/plain";
           break;
       case ".zip":
           $filedata['type'] = "application/zip";
           break;
       default:
           $filedata['type'] = "application/octet-stream";
           break;
   }
   
   
   return $filedata;
}
}
?>